Effective magnetic path length in Epstein frame test of electrical steels

Autor:	Du-Xing Chen, Yong-Hong Zhu
Rok vydání:	2022
Předmět:	Instrumentation
Zdroj:	Review of Scientific Instruments. 93:055105
ISSN:	1089-7623 0034-6748
Popis:	The effective magnetic path length l m for a 25 cm Epstein frame test is studied on the basis of a relevant demagnetizing model and determined by a comparative measurement of dc and ac hysteresis loops at each value of peak flux density B p, with the field recorded by H-coils placed above the mid-section of the limbs or calculated from the magnetizing current. The obtained B p and frequency dependences of l m for testing core loss P s and peak field H p of an electrical steel are explained in terms of differential susceptibility along the measured loops and demagnetizing and eddy-current effects on local magnetization processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b73b16ccb9f005c587b76c1a83cd86f https://doi.org/10.1063/5.0084859 Zobrazit plný text záznamu